John p



(No Model.)

J. P. GRUBER.

FILTER. No. 353,855. P5555555 D55. 7, 1886 By his Attorney,

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of the diaphragm.

UNITED STATES PATENT OFFICE.

JOHN rl GRUBER, or JERSEY CITY, NEW JERSEY.

FILTER.

SPECIFICATION forming part of Letters Patent No. 353,855, dated December7, 1886.

r Application filed August 13, 1886. Serial No. 210,767.

To aZZ whom it may concern.-

Be it known that I, JOHN P. GRUBER, a citizen of the United States, anda resident of Jersey City, in the county of Hudson and State of NewJersey, have invented certain Improve ments in Filters, of which thefollowing is a specification.

My invention relates to that class of filters which have a diaphragmthrough which the liquid to be filtered may be made to pass in eitherdirection by the manipulation of a cock or cocks.

The object of my invention is, in part, to provide a means forflushingthefilterforcleansing the diaphragm, which is apt to become foulwith sediment, and in part to provide guards or stops to prevent theswelling out or bulging of the diaphragm when under pressure. In orderto improve the facilities for flushing. I provide the two chambers ofthe filter each with an outlet and introduce the liquid centrally anddischarge it directly against the face This liquid flows off di rectlyat the outlet from the chamber flushed, and does not pass through thediaphragm of the filter. The guards to protect the diaphragm againstdistention and distortion are peculiarly arranged, as will behereinafter described, with a view to avoid impeding the flow or passageof the liquid through the diaphragm. and are not normally in contactwith the diaphragm. My invention will be fully described hereinat'ter,and its novel features carefully defined in the claims.

In the drawings which serve to illustrate my invention. Figure 1 is avertical mid-section of the filter, taken at right angles to the axes ofthe cock-plugs, in the plane indicated by line 1 1 in Fig. 2; and Fig. 2is ahorizontal section taken in the plane indicated by the line 2 2 inFig. 1.

The body of the filter, which may be of any shape, is formed of two likeflanged sections, A A, forming, when secured together, two chambers, BB, separated by a filtering diaphragm or partition, 0, clamped betweenor held in place by internal flanges, a a, formed,

respectively, on the two sections A A. These sections are provided, forconvenience of securing them together, with external flanges, b b, (seenin Fig. 2,) which receive securingscrews 0 0.

(No model.)

The filtering-diaphragm is or may be composed of two sheets of thickfelt, d d, embraced between sheets of wire-gauze e e, of differentdegrees of fineness--that is to say, the outer sheets on each side maybe comparatively coarse in texture, the next sheets finer in textme, andthe sheets next the felt very fine in texture. This is the way I preferto construct the diaphragm; but any material or materials may beemployed for the diaphragm that will properly filter the liquid, and ofcourse the choice of material used will be governed to some extent bythe character of the liquid to be filtered.

As herein shown. my filter is particularly well adapted for filteringwater from cocks and hydrants under the usual pressures from the citymains.

D is the inlet of the filter, and E the outlet.

D is a two-way inlet-cock, and E is a twoway outletcock. The cock Dcontrols two ports forming the mouths of two passages. g and g, opening,respectively, into chambers B and B through inlet-pipes h and h. Thepassages gg are formed in the shell D of cock D, and said shell has aflanged base, whereby it is secured to the body of the filter. The plugD of cock D has a cross port, 6, which is always open to inlet D. andmay be made to register with either of the ports opening intopassagesgg'. This plug has the usual cross-handle. D", a part of whichis seen in Fig. l, and I. usually provide it with stops of 8 a wellknown kind, to limit its oscillatory movement in both directions.

The outlet-cock E is, or may be, an exact counterpart of the inlet-cockD. In its shell E is mounted a plug, E provided with a cross-port, j,and a crosshandle, E. The cock E controls the flow of the liquid fromchambers B and B through passages 10 and 70', respectively, and port jin the plug is always open at its wider end to the outlet E.

The inlet-pipes h h have their nozzles arranged with their axesperpendicular to the diaphragm, and are arranged to discharge the liquidcentrally directly against the diaphragm O, to facilitate washing thesediment therefrom in flushing.

So far as described the operation is as follows: When the cock-plugs Dand E are turned as represented in Fig. 1, the liquid,

too

4 ditions.

. entering at inlet D,flows through port a in plug D through passage 5/,and through pipe hto chamber B; thence, under pressure, it passesthrough the filtering-diaphragm O to chamber 5 B, and out throughpassage k, portj in plug E and outlet E, being thoroughly filtered inits passage. When sediment accumulates in chamber B, and on that side ofthe filtering-- diaphragm, said chamber may be thoroughly I and quicklyflushed or washed out by turning the plug of outlet-cock E until portjcoincides with passage 70, when the liquid will flow directly throughchamber B. When it is desired to reverse the course of the liquid andcompel it to pass through the diaphragm O in the opposite direction, theinlet and outlet cocks are both shifted. The liquid then flows firstinto chamber B, and then through the diaphragm to chamber B. If it bedesired to shut off the liquid entirely, the cock-plug lowed to escapeat the upper parts of chambers B and B by means of plug-valves G G, onefor each chamber. These are precisely alike, and I need only describeone. internally-screw-threaded outlet, Z, is screwed 0 a plug, m, whichhas a passage, 12, extending in from its inner end, and connecting witha lateral aperture, 0, in the plug. WVhen the plug m is unscrewed farenough to nncover aperture 0, the air may escape from the cham- 5 her byway of said aperture and passage n.

The valve G is shown in section and open, and

the plug m of valve G in elevation and the plug screwed down tight. i

The pressure on one side of the diaphragm 0 especially if longcontinued, is apt to bulge it out or give it a convex form on theopposite side. To obviate this I provide a support or stop-one in eachchamberto prevent too much play of the diaphragm under these con- Iusually employ, as a simple form of stop, a bent rod, H, secured to theinner wall of the chamber, and its ends 1' 1' arranged to stand adjacentto the diaphragm C, but a little out of contact. I employ for this pur-5o pose the guard or stop illustrated, which comprises the bentstaple-like rod H, secured to the inner wall of the chamber and itsprongs arranged to stand with their ends 1' r in close proximity to thediaphragm C, but not in contact therewith. The nozzle of the inlet-pipeh stands between these prongs.

' 'Having thus described my invention, I wish to say that I do not claimthe construction whereby the liquid may be made to pass In" an throughthe filterin both directions or be made to pass directly through eitherchamber without passing through the filtering-diaphragm, as this is oldin filters; nor do I claim the particular construction of the diaphragmas described, nor the air-outlet on'the chamber, as these features arenot new with me; but I am not aware of any filter having apartition-diaphragm and'two inlets and outlets on the opposite sides ofsaid diaphragm, and wherein the inlet'nozzles are both constructedlandarranged to discharge directly upon or against the diaphragm on oppositesides, as herein described.

What I claim as my invention is- 1. The combination of the filter-bodyA, having two chambers, B B, the filtering-diaphragmO between andseparating said chambers, the two inlet-pipes h h, arranged,respectively, in chambers B B, the discharge nozzles of said pipes beingarranged with their axesperpendicular to said diaphragm, the two- Wayinlet co'ck D, controlling the inlets to chambers B B, and the two-wayoutlet-cock E, controlling the outlets from said chambers, as set forth.

2. The combination, in a filter, of the two sections forming the body ofthe filter, the filtering-diaphragm constructed of layers of filteringmaterial and clamped between and'held by flanges on the said sections ofthe body, and the two staple-like guards H H. one in each chamber,secured to the filter body, and the ends 1' r of their prongs arrangedin proximity to but out of contact with the respective faces of saiddiaphragm, as set forth.

3. The combination, in a filter, of the 'hollow body A, divided intotwochambers, B B, by a filtering-diaphragm, C,.constructed of layers offlexible filtering material clamped and held by flanges on thefilter-body, the said diaphragm, the two guards or stops H, onein eachchamber, secured to the body, and their ends arranged close to but outof contact with the faces of the diaphragm, the two angular inlet-pipesh h, one in each chamber, with their nozzles arranged between the prongsof the guards H, and the axes of said nozzles arranged perpendicular tothe faces of said diaphragm, the two-wayinlet-cock D, and the two-wayoutlet-cock E, as set forth.

In witness whereof I have hereunto signed my name in the presence of twosubscribing witnesses.

JOHN P. GRUBER.

